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Product Video
Product Description
| 1.56 Bifocal Round Top HMC Optical Lens | |
| Index | 1.56 |
| Diameter | 70 mm |
| Monomer | NK55 (imported from Japan) |
| Specific Gravity | 1.15 |
| Abbe value | 42 |
| Round top segmen | 28 |
| Transmission | > 97% |
| Guarantee | 5-year |
| Power range | SPH: 0.00~+3.00 0.00~-3.00 ADD: +1.00~+3.50 |
Product Features
As people age, they may find that their eyes are not adjusting to distances as they used to. When people inch closer to forty, the lens of the eyes begin to lose flexibility. It becomes difficult to focus on close objects. This condition is called presbyopia. It can be managed to a large extent with the use of bifocals.
Bifocal (also can be called Multifocal) eyeglass lenses contain two or more lens powers to help you see objects at all distances after you lose the ability to naturally change the focus of your eyes due to age.
 | Bifocal means that there are two different diopters on the same lens. The two diopter are distributed in different areas of the lens. The area for viewing far is called the far field, which is located in the upper part of the lens. The near zone is located in the lower half of the lens. The object in the far distance can be seen through the far-field of a pair of lenses, and the close-range objects can be seen through the near-field of the same pair of lenses. You don't need to carry two pairs of glasses with you, you don't need to switch between distant and near-eye glasses frequently. |
Coating Choice
 | Hard Coating(HC): To enhance the hardness of the lens to prevent the substrate scratch
Anti-reflection Coating(HMC/ AR): To protect the lens effectively from reflection, enhancing functional and charity of your vision
Super hydrophobic Coating(SHMC): To make the lens waterproof, antistatic, anti slip and oil resistance |
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